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LD7120A - Single Synchronous Buck PWM Controller

Datasheet Summary

Description

The LD7120A is a single PWM controller designed to drive N-channel MOSFET in a synchronous buck topology.

The IC integrates the controller, output adjustment, monitoring, and protection functions in a single 8-pin package.

Features

  • over current protection. The output current is monitored by sensing the voltage drop across the MOSFET RDS(ON), which eliminates the need for a current sensing resistor. Features.
  • Operates from 5V.
  • Drives Two N-channel MOSFETs.
  • Fixed 300KHz Constant Switching Frequency.
  • Full 0~100% Duty-cycle.
  • Programmable Over Current Protection.
  • Internal Soft-start.
  • Fast Transient Response.
  • Under-voltage Lockout.

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Datasheet preview – LD7120A

Datasheet Details

Part number LD7120A
Manufacturer Leadtrend
File Size 280.33 KB
Description Single Synchronous Buck PWM Controller
Datasheet download datasheet LD7120A Datasheet
Additional preview pages of the LD7120A datasheet.

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Full PDF Text Transcription

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LD7120A 12/14/2006 REV:00 Single Synchronous Buck PWM Controller General Description The LD7120A is a single PWM controller designed to drive N-channel MOSFET in a synchronous buck topology. The IC integrates the controller, output adjustment, monitoring, and protection functions in a single 8-pin package. The LD7120A provides simple, single feedback loop, voltage mode controller with fast transient response. Internal 0.8V temperature-compensated reference voltage is designed to meet low output voltage for further applications. A fixed 300KHz frequency oscillator reduces design complexity, while balancing typical application cost and efficiency. The LD7120A features over current protection.
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